Across
- 2. Au
- 4. Fe
- 6. Co
- 7. H
- 12. A table that organizes all the elements based on their properties
- 13. The horizontal rows on the periodic table
- 14. The phrase used to identify electrons on the outermost energy level
- 16. atomic number 16
- 17. Sn
Down
- 1. A subatomic particle that is negatively charged
- 3. defines the identity of an atom
- 5. unreactive elements that make up group 18
- 8. The vertical columns on the periodic table
- 9. A neutral particle in the nucleus
- 10. Hg
- 11. Elements that are good conductors,shiny,malleable,and ductile
- 15. a pure substance made of only one atom